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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0732735 (1991-07-18) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 1 인용 특허 : 0 |
A system for introducing fresh air to a locked vault which is integral to the door of the vault. A fan provides motive force to the air which flows principally through passages in, or created with, existing components in the door. A food/water passage may be furnished by providing the door wheel spi
A personnel safety system for vaults, including a passageway for the passage of air, food, and/or water from the front of a vault door to the inside of a vault on which said vault door is mounted, comprising: (a) a hollow tube employed as the door wheel spindle for a locking mechanism mounted in sai
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